Nut-lock.



" s. c. PUGH.

NUT LOOK. APPLIOATIOK IILED IBB. 15,1908.

Patented Oct. 6,1908.

I I I I I I, r I! F "SEBASTIAN oJPUe-n, or NOTTINGHAM-TOWNSHIP, HARRISONooUNTY, OHIO.

Nor-Lock.

Specification of Letters Patent.

Patented Oct. 6, 1908.

Application filed February 15, 1908. Serial No. 416,066.

To all whom it may concern:

l 3e 1t known that I, SEBASTIAN C. PUGH, citizen of the United States,residing at Nottingham township, in the county of Har rison and State ofOhio, have invented certain new and useful Improvements in Nut- Locks,of which the following is a specifica t1on. i

This invention appertains to. means for preventing the loosening of suchfastening means as nuts, burs, bolts or the like after being tightened,said means being of ,novel' formation and particularly adapted forsecuring the nuts of bolts or like" fastenings employed inrailroad andbridge construction. i

The invention contemplates a spring lock device of approximately" U formand having pivotal connection with a plate or washer adapted to beinterposed between the nut and the work and held from rotation, saidlock device having inturned points to enter open ings in opposite sidesof the nut or likepart to be secured. V

The invention further consists of a nut or like parthaving oppositelyinclined portions at opposite sidesor faces for the inturned points ofthe lock device to ride upon so as v to spread themembers or. legs ofthe said lock device, whereby said inturned points are enabled to springinto openings at the inner ends of the saidinclined portions whenreaching a position to register with said openings. V V

For a full understanding of the invention and the merits thereof andalso to acquire a knowledge of the details of construction and the meansfor effecting the result, ref-. erence is to be had to the followingdescription and accompanying drawings.

While the invention may be adapted to different forms and conditions bychanges in the structure and minor details without departing from thespirit or essential features thereof, still the preferred embodiment isshown in the accompanying drawings, in which:

Figure 1 is a perspective view of a nutlock embodying the invention, thedotted lines showing the position of the lock device when turned asideto admit of tightening or loosening the nut or like part. Fig. 2 is'aperspective View of the nut lock, looking from the rear. Fig.3 is ahorizontal section on the'line wa2 'of Fig. 1. Fig. 4 is a detail frontView of the nut.

Cor-responding and like parts are referred toin the followingdescription and indicated in all the views ofthe drawings by the samereference characters.

The nut 1 may be of any construction and have any number of faces oredges and is providedat opposite points with inclined portions 2, thesame convergin towards the outer face of the nut so as to efiect aspreading of the members or legs of the lock device when pressing thelatter home. The inclined portionsZ flare towards their outer ends,

whereby provision is had for the entrance of the inturned points of thelock device when moving the latter to an operative position. Openings 3are provided at the inner ends of the inclined portions 2 to receive theinturned points of the lock device. The openings 3 may be of any depthand may lead into the bolt opening or terminate any required. distancefrom the bolt opening. The lock device 4 is approximately of U-form andis constructed of spring wire of desired gage according to the specialpurpose for which the lock device is designed. The legs or side membersof the spring lock device are bent inward to form points 5 which areadapted to enter the openings 3 so as to-prevent displacement of theparts when properly positioned. A crimp 6 is formed in the closed end ofthe lock device and provides a pivot attachment for the lock device and.holds the same in place.

A washer or plate 7 is provided to slip upon the bolt or like part 8 andis adapted to be held from turning by any convenient means, such as aprojection 9 upon its rear side and adapted to enter the part againstwhich the washer may be placed. If the work be ofwood, as in bridgeconstruction, the projection 9 may be forced into the timber either bythe blow of a hammer delivered upon the washer or plate, or by theaction of the nut when screwing the same home upon the bolt 8. If thewasher or' plate be applied to a metal part, the latter will be providedin any manner with an opening or depression to receive the projection 9,as will be readily understood. The manner of securing the washer orplate from turning is immaterial within the scope of the invention. Alug 10 projects from the face of the washer or plate and is pierced toreceive the lock device or the crimp 6 thereof. The sides of the crimp 6embrace opposite sides of the lug 10 and prevent displacement of thelock device.

In practice, the washer or plate 7 with the spring lock device pivotedthereto in the manner set forth herein, is slipped upon the belt or likepart 8 and is prevented from turning. The nut l is screwed upon thethreaded end of the bolt or kindred part 8 and serves to confine thewasher or plate 7. After the nut has been screwed home tight upon thebolt and moved to a position to enable the inturned points 5 of thespring lock device to engage with and ride upon opposite inclinedportions 2, the said lock device is moved from the position indicated bydotted lines in Fig. 1 to bring the said inturned points 5 in engagementwith opposite inclined portions 2 and the side members of said lockdevices are pressed inward to cause them to ride upon said inclinedportions 2, which latter serve to spreadthe side members of the lockdevice and subject them to tension, when the inturned points 5 reach a.position to register with the openings 3, they spring therein and aremade secure. To release the spring lock device, it is necessary to forcethe side members apart to withdraw the inturned points 5 from theopenings 3 when said lock device may be turned aside, as indicated bythe dotted lines in Fig. 1, thereby admitting of the loosening orremoval of the nut in the manner well understood.

Having thus described the invention, what is claimed as new is:

1. In a nut lock, the combination of a washer to be slipped upon thebolt, a spring lock device of approximately Utorm having pivotalconnection with said washer and having inturned points at theextremities of its side members, and a nut having openin in oppositeedges and having inclined portions leading out ard from said opei'iingsfor the inturned points of the lock device to ride upon when pressingthe same home.

2. In a nut lock, the combination 0! a washer or plate having a lug, aspring lock device of approximately U-lt'orm having a crimp at itsclosed end mounted in the said lug and embracing opposite sides thereofand having inturned points at the extremities of its side members, and anut having inclined portions in opposite edges which converge outwardlyand having openings at the inner ends of said inclined portions toreceive the inturned points ofthe lock device.

3. A nut lock comprising a washer or plate having an interlockingprojection upon its rear side and provided with a lug upon its face, aspring lock device of U-form having inturned points at the extremitiesof: its side members and having a crimp in its closed end which ismounted in the aforementioned lug and embraces opposite sides thereof,and a nut having inclined portions at oppositev edges which converge andflare outwardly, and having openings at the inner ends of said inclinedportions to receive the inturned points of the lock device.

In testimony whereof I allix my signature in presence of two witnesses.

SEBASTIAN C. PUGH. [n s] \Vitnesses ISAAC S. Corn, GAY. S. Rooms.

